At first, the little vaccination showed that up to 40% of the children between 5 to 17 months were protected
Na mbụ, obere ịgba ọgwụ mgbochi a gosiri na ihe ruru pasentị 40 n'ime ụmụaka dị ọnwa 5 ruo 17 nwetere ọgwụ a nwere mgbochi.